package com.example.utils;

import android.app.Dialog;
import android.content.Context;
import android.content.pm.PackageInfo;
import android.content.pm.PackageManager;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.net.ConnectivityManager;
import android.net.NetworkInfo;
import android.os.Build;
import android.os.Environment;
import android.os.Looper;
import android.util.Log;
import android.view.Gravity;
import android.widget.Toast;

import java.io.BufferedReader;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.io.StringWriter;
import java.io.Writer;
import java.lang.reflect.Field;
import java.security.MessageDigest;
import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.HashMap;
import java.util.Map;

/**
 * 作者 fengxn
 * 日期 2017/12/26
 * 功能描述：工具类
 */

public class Utils
{
    /**
     * 常量
     */
    public static String STORAGEPRTH = getFilePath(Environment.getExternalStorageDirectory().getPath(), "Scrawl");

    /**
     * 控件信息吐司
     */
    public static void showToast(Context ctx, int id, String str)
    {
        if (str == null)
        {
            return;
        }
        Toast toast = Toast.makeText(ctx, ctx.getString(id) + str, Toast.LENGTH_SHORT);
        toast.setGravity(Gravity.CENTER, 0, 0);
        toast.show();
    }

    /**
     * 普通吐司
     */
    public static void showToast(Context ctx, String errInfo)
    {
        if (errInfo == null)
        {
            return;
        }

        Toast toast = Toast.makeText(ctx, errInfo, Toast.LENGTH_SHORT);
        toast.setGravity(Gravity.CENTER, 0, 0);
        toast.show();
    }

    /**
     * 弹框提醒
     */
    public static Dialog showDialog(Context ctx, int layViewID, int ThemeType)
    {
        Dialog res = new Dialog(ctx, ThemeType);
        res.setContentView(layViewID);
        return res;
    }

    /**
     * 文件路径拼接
     */
    public static String getFilePath(String str1, String str2)
    {
        return str1 + "/" + str2;
    }

    /**
     * 根据路径、质量返回bitmap
     */
    public Bitmap getImageByFilePath(String filePath, int scale)
    {
        Bitmap res = null;
        BitmapFactory.Options options = new BitmapFactory.Options();
        options.inJustDecodeBounds = true;
        BitmapFactory.decodeFile(filePath, options);
        options.inJustDecodeBounds = false;
        options.inSampleSize = scale;
        options.inPreferredConfig = Bitmap.Config.ARGB_4444;
        return res;
    }

    /**
     * 根据路径、尺寸返回bitmap
     */
    public Bitmap getImageByFilePath(String filePath, int Towidth, int ToHeight)
    {
        Bitmap res = null;
        BitmapFactory.Options options = new BitmapFactory.Options();
        options.inJustDecodeBounds = true;
        if (!new File(filePath).exists())
            return res;
        BitmapFactory.decodeFile(filePath, options);

        int origionalWidth = options.outHeight;
        int origionalHeight = options.outWidth;
        options.inJustDecodeBounds = false;
        int scale = Math.max(origionalWidth / Towidth, origionalHeight / ToHeight);
        options.inSampleSize = scale;
        options.inPreferredConfig = Bitmap.Config.ARGB_4444;
        try
        {
            res = BitmapFactory.decodeFile(filePath, options);
        } catch (Exception e)
        {
            e.printStackTrace();
            return null;
        } catch (OutOfMemoryError e)
        {
            e.printStackTrace();
            return null;
        }
        return res;
    }

    /**
     * 检查网络是否连通
     * @return boolean
     * @since V1.0
     */
    public boolean isNetworkAvailable(Context context)
    {
        // 创建并初始化连接对象
        ConnectivityManager connMan = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
        // 判断初始化是否成功并作出相应处理
        if (connMan != null)
        {
            // 调用getActiveNetworkInfo方法创建对象,如果不为空则表明网络连通，否则没连通
            NetworkInfo info = connMan.getActiveNetworkInfo();
            if (info != null)
            {
                return info.isAvailable();
            }
        }
        return false;
    }

    /**
     * UncaughtException处理类,当程序发生Uncaught异常的时候,由该类来接管程序,并记录发送错误报告. 需要在Application中注册，为了要在程序启动器就监控整个程序。
     */
    public class CrashHandler implements Thread.UncaughtExceptionHandler
    {
        /**
         * TAG
         */
        public static final String TAG = "CrashHandler";
        /**
         * CrashHandler实例
         */
        private CrashHandler mCrashHandler;
        /**
         * 系统默认的UncaughtException处理类
         */
        private Thread.UncaughtExceptionHandler mDefaultHandler;
        /**
         * 程序的Context对象
         */
        private Context mContext;
        /**
         * 用来存储设备信息和异常信息
         */
        private Map<String, String> infos = new HashMap<String, String>();
        /**
         * 用于格式化日期,作为日志文件名的一部分
         */
        private DateFormat formatter = new SimpleDateFormat("yyyy-MM-dd-HH-mm-ss");

        /**
         * 私有构造函数
         */
        private CrashHandler()
        {

        }

        /**
         * 获取CrashHandler实例 ,单例模式
         *
         * @return
         * @since V1.0
         */
        public CrashHandler getInstance()
        {
            if (mCrashHandler == null)
                mCrashHandler = new CrashHandler();
            return mCrashHandler;
        }

        /**
         * 初始化
         * @param context
         * @since V1.0
         */
        public void init(Context context)
        {
            mContext = context;
            // 获取系统默认的UncaughtException处理器
            mDefaultHandler = Thread.getDefaultUncaughtExceptionHandler();
            // 设置该CrashHandler为程序的默认处理器
            Thread.setDefaultUncaughtExceptionHandler(this);
        }

        /**
         * 当UncaughtException发生时会转入该函数来处理
         */
        @Override
        public void uncaughtException(Thread thread, Throwable ex)
        {
            if (!handleException(ex) && mDefaultHandler != null)
            {
                // 如果用户没有处理则让系统默认的异常处理器来处理
                mDefaultHandler.uncaughtException(thread, ex);
            } else
            {
                try
                {
                    Thread.sleep(3000);
                } catch (InterruptedException e)
                {
                    Log.e(TAG, "uncaughtException() InterruptedException:" + e);
                }
                // 退出程序
                android.os.Process.killProcess(android.os.Process.myPid());
                System.exit(1);
            }
        }

        /**
         * 自定义错误处理,收集错误信息 发送错误报告等操作均在此完成.
         *
         * @param ex
         * @return true:如果处理了该异常信息;否则返回false.
         * @since V1.0
         */
        private boolean handleException(Throwable ex)
        {
            if (ex == null)
            {
                return false;
            }

            // 收集设备参数信息
            collectDeviceInfo(mContext);

            // 使用Toast来显示异常信息
            new Thread()
            {
                @Override
                public void run()
                {
                    Looper.prepare();
                    Toast.makeText(mContext, "很抱歉,程序出现异常,即将退出.", Toast.LENGTH_SHORT).show();
                    Looper.loop();
                }
            }.start();

            // 保存日志文件
            saveCatchInfo2File(ex);
            return true;
        }

        /**
         * 收集设备参数信息
         *
         * @param ctx
         * @since V1.0
         */
        public void collectDeviceInfo(Context ctx)
        {
            try
            {
                PackageManager pm = ctx.getPackageManager();
                PackageInfo pi = pm.getPackageInfo(ctx.getPackageName(), PackageManager.GET_ACTIVITIES);
                if (pi != null)
                {
                    String versionName = pi.versionName == null ? "null" : pi.versionName;
                    String versionCode = pi.versionCode + "";
                    infos.put("versionName", versionName);
                    infos.put("versionCode", versionCode);
                }
            } catch (PackageManager.NameNotFoundException e)
            {
                Log.e(TAG, "collectDeviceInfo() an error occured when collect package info NameNotFoundException:", e);
            }
            Field[] fields = Build.class.getDeclaredFields();
            for (Field field : fields)
            {
                try
                {
                    field.setAccessible(true);
                    infos.put(field.getName(), field.get(null).toString());
                    Log.d(TAG, field.getName() + " : " + field.get(null));
                } catch (Exception e)
                {
                    Log.e(TAG, "collectDeviceInfo() an error occured when collect crash info Exception:", e);
                }
            }
        }

        /**
         * 保存错误信息到文件中
         *
         * @param ex
         * @return 返回文件名称, 便于将文件传送到服务器
         */
        private String saveCatchInfo2File(Throwable ex)
        {
            StringBuffer sb = new StringBuffer();
            for (Map.Entry<String, String> entry : infos.entrySet())
            {
                String key = entry.getKey();
                String value = entry.getValue();
                sb.append(key + "=" + value + "\n");
            }

            Writer writer = new StringWriter();
            PrintWriter printWriter = new PrintWriter(writer);
            ex.printStackTrace(printWriter);
            Throwable cause = ex.getCause();
            while (cause != null)
            {
                cause.printStackTrace(printWriter);
                cause = cause.getCause();
            }
            printWriter.close();
            String result = writer.toString();
            sb.append(result);
            try
            {
                long timestamp = System.currentTimeMillis();
                String time = formatter.format(new Date());
                String fileName = "crash-" + time + "-" + timestamp + ".log";
                if (Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED))
                {
                    String path = STORAGEPRTH + "/crash/";
                    File dir = new File(path);
                    if (!dir.exists())
                    {
                        dir.mkdirs();
                    }
                    FileOutputStream fos = new FileOutputStream(path + fileName);
                    fos.write(sb.toString().getBytes());
                    // 发送给开发人员
                    sendCrashLog2PM(path + fileName);
                    fos.close();
                }
                return fileName;
            } catch (Exception e)
            {
                Log.e(TAG, "saveCatchInfo2File() an error occured while writing file... Exception:", e);
            }
            return null;
        }

        /**
         * 将捕获的导致崩溃的错误信息发送给开发人员 目前只将log日志保存在sdcard 和输出到LogCat中，并未发送给后台。
         *
         * @param fileName
         * @since V1.0
         */
        private void sendCrashLog2PM(String fileName)
        {
            if (!new File(fileName).exists())
            {
                Log.e(TAG, "sendCrashLog2PM() 日志文件不存在");
                return;
            }
            FileInputStream fis = null;
            BufferedReader reader = null;
            String s = null;
            try
            {
                fis = new FileInputStream(fileName);
                reader = new BufferedReader(new InputStreamReader(fis, "GBK"));
                while (true)
                {
                    s = reader.readLine();
                    if (s == null)
                        break;
                    // 由于目前尚未确定以何种方式发送，所以先打出log日志。
                    Log.e(TAG, s);
                }
            } catch (FileNotFoundException e)
            {
                e.printStackTrace();
            } catch (IOException e)
            {
                e.printStackTrace();
            } finally
            { // 关闭流
                try
                {
                    reader.close();
                    fis.close();
                } catch (IOException e)
                {
                    e.printStackTrace();
                }
            }
        }
    }

    /**
     * 线程睡眠
     */
    public class CSleep
    {
        public static final long DEFAULT_SLEEP_TIME = 500;

        private boolean isRuning = false;

        public boolean isRuning()
        {
            return isRuning;
        }

        public void runWithTime(final long defaultSleepTime)
        {
            isRuning = true;
            new Thread()
            {

                @Override
                public void run()
                {
                    try
                    {
                        sleep(defaultSleepTime, 0);
                    } catch (InterruptedException e)
                    {
                        e.printStackTrace();
                    }
                    isRuning = false;
                    super.run();
                }
            }.start();
        }
    }

    /**
     *字符串转换md5
     */
    public static class MD5Util {
        public static final String MD5(String s) {
            char hexDigits[] = { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9',
                    'a', 'b', 'c', 'd', 'e', 'f' };
            try {
                byte[] btInput = s.getBytes();
                // 获得MD5摘要算法的 MessageDigest 对象
                MessageDigest mdInst = MessageDigest.getInstance("MD5");
                // 使用指定的字节更新摘要
                mdInst.update(btInput);
                // 获得密文
                byte[] md = mdInst.digest();
                // 把密文转换成十六进制的字符串形式
                int j = md.length;
                char str[] = new char[j * 2];
                int k = 0;
                for (int i = 0; i < j; i++) {
                    byte byte0 = md[i];
                    str[k++] = hexDigits[byte0 >>> 4 & 0xf];
                    str[k++] = hexDigits[byte0 & 0xf];
                }
                return new String(str);
            } catch (Exception e) {
                return null;
            }
        }

        public void main(String[] args) {
            System.out.print(MD5Util.MD5("password"));
        }
    }

}
